Magnavov model 51MP392H auto changing av inputs

My Magnavox model 51MP392H/17 purchased from wal mart, has the following problem/s:
1) The tv sometimes will not turn off.
2) The tv will turn itself on some time after being turned
off.
3) While watching tv the TV will change input selections,IE:
if watching AV1 will by itself go to civ. will go from
civ to av2 and so on. Not contiuneus but will wait
several minutes between changes.
4) While it is acting strange as above any input from the
remote will cause the above to happen.IE change volume
level the input will advance also.
I have taken the back off, and tried to see if anything oviouse is burnt or if any carbon traks are visible but can't find anything visible. I don't have much electronics tranning, but I am aware of the high voltage curcuits that
seem to be near the back of the tv. Please help it intend to have the problem fixed through a shop, but I need some info and perhaps a very rough estimate be for hand.

Well I guess the problem was too hard for all of you. The TV repair guy showed up today,and said the proble was with the SSB board. Now I have seen this board mentioned before on either this site or one of the other sites that I posted. This board must be the worst board in the history of TV sets. By the way I bought the $299.95 extended warinty, which as many of you know most money people say is a waste of time. The cost of the board and installation is $900.00!!! The TV at walmart does not cost $900.00, the last price I saw was $800+ but less than $900.00. This is a throw away TV. In light of all the above I cannot recomend this TV in any way. Oh I forgot, the first one I bought the convergence sucked and I had to return to walmart. That is why I also bought the extended warrenity.Well I guess the problem was too hard for all of you. The TV repair guy showed up today,and said the proble was with the SSB board. Now I have seen this board mentioned before on either this site or one of the other sites that I posted. This board must be the worst board in the history of TV sets. By the way I bought the $299.95 extended warinty, which as many of you know most money people say is a waste of time. The cost of the board and installation is $900.00!!! The TV at walmart does not cost $900.00, the last price I saw was $800+ but less than $900.00. This is a throw away TV. In light of all the above I cannot recomend this TV in any way. Oh I forgot, the first one I bought the convergence sucked and I had to return to walmart. That is why I also bought the extended warrenity.

yes youre model will need two convergence ICs they are both STK392-120 and you will also need some 6.8 ohm resistors usually two or four resistors will need replacing as well. The site servicemanuals do have all the parts and they do provide free installation instructions with the ICs.

2) CRT filament transformer winding open (check the windings that supply voltage to the CRT filaments)

3) Video / CRT socket boards bad (highly unlikely but check anyway)

4) High Voltage power supply malfunctioning (related to problem #1)

This
listing is a good starting point. I would suggest that you purchase a
schematic to aid in testing the voltages mentioned in the 4 steps
above. If you have a background in electronics then do the above, if
not please ask a qualified TV technician to perform these steps.

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Thats caused by failed convergence ICs and the 6.8 ohm resistors. You can get the repair kit called the DPTV305 -DPTV345 & MAG01 chassis convergence repair kit which fits your model. The kit has the components and the CD with repair instructions and its available at the following link top of the page. http://tvrepairworld.com/phillips__magnavox_repair_kits

Your flyback has failed most likely...bad new is they are nearly impossible to find, This is a known issue on most of the models below. The site Tv Repair Kits can sometimes get replacements - but its not often.

This repair kit is known to work on Magnavox TV sets with the following Chassis/Model Numbers.

Go to Wal-Mart and purchase a universal remote. Find your code for the model you have and follow the instructions that came with the remote. 99% chance that will fix the problem and you'll have your remote again.

No,not changeable,the screen about 90% of the tv.The new screen part if tv companies sell it to u.The part and labors will exeed the new tv.Not worth repair if screen broken or damages with noticable when tv is on.

If there is NO HDMI on the TV, There are 2 options to still get HD.
1. Check if your TV has a DVI input, If it does you need a DVI to HDMI converter.
This can be a problem with some TV models it might not sync up 100%.
2. I recommend doing this, Purchase the Component Cable For the PS3 from Best Buy or any Game store. Make sure it is the ONE for the PS3!!!!!!!!!!!!!!
This cable will give you up to 1080i resolution and stereo Audio.
Plug in the Red, Green and Blue into the Component (R,G,B) Input in the TV, The Red and White (audio) will follow into the same Input (White and Red) just match the colors from the cable to the TV.
On the PS3 in the Menu go to the 2nd row from the Left and down to DISPLAY SETTINGS.
Select Component (under HDMI) check off everything except 1080p and then SAVE by pressing X.
If you have a Receiver (AMP) that your Audio goes into, Then you can buy an Optical Cable for Surround Sound.
Plug in the Optical cable then on the PS3 go into the menu, 2nd row, Sound Settings, Choose Optical, Then choose Auto and SAVE!
Hope this will Help!

I also found this with the word search but it makes no sense to me sorry...

The HDR2002 has two microprocessors. The Microprocessor, 7001, on the SSB monitors the Keyboard and the Remote sensor during standby. This IC controls the Tuner, Video switching on the SSB, generates the consumer OSD. Pin 5 of 7001 monitors the Keyboard for a voltage change to generate a command. The Front Detect line on Pin 6 monitors the AV inputs on the Side Jack panel. If a problem develops, the Front Detect will go Low, preventing 7001 from receiving any commands. The Power Fail input on Pin 79 goes High if the set looses power while the set is On. Composite Video is fed to Pin 31 for Closed Caption decoding. Horizontal and Vertical sync on Pins 53 and 55 synchronize the OSD and Closed Captions display signals, which are output on Pins 46, 47, and 48. Fast Blanking for the OSD is output on Pin 52 There are three I2C busses on 7001. The Bus on Pins 78, 80, and 97 communicates with the MemoryIC 7012. This IC stores Customer setup information, Option codes, and Error codes. I2C busses, Sand F communicate with the Tuner on the PIP panel, and the ICs on the SSB. The S bus also controlsthe Tuner on the SSM and the Audio and Video switching on the SSM. Data lines on Pins 16 and 17communicate with the Microprocessor on the ACS module.

BTW if you don’t plan on trying this and are going to throw out the TV, I still need a IC convergence board for a 51MP392H/17 TV I'm fixing, I'm willing to pay S/H and buy your IC board that’s not been tampered with. Edwinkraus@hotmail.com

yes youre model will need two convergence ICs they are both STK392-120 and you will also need some 6.8 ohm resistors usually two or four resistors will need replacing as well. The site servicemanuals do have all the parts and they do provide free installation instructions with the ICs.